Ionic liquid matrices are a new class of matrices used in MALDI mass spectrometry. The ablation process of several ionic liquid matrices was studied by determining the velocity distribution of ablated neutral matrix molecules. This was done by a postionization approach, where the neutrals were ionized in the ablation plume by a second laser pulse. It was found that a second, time-delayed ablation event occurs consisting completely of neutral molecules. To explain this, the reflected-shockwave model is used, which assumes that the shockwave emerging from the laser ablation is reflected at the sample holder surface. When the shockwave arrives at the sample surface it causes a second ablation.

The article presents a study which develops and characterizes the single particle laser ablation mass spectrometer (SPLAM) for real-time analysis of organic aerosol. The developed SPLAM method is equipped with aerodynamic lens system, laser optical detection, and linear Time-of-Flight mass...

Discusses a study which examined the use of laser ionization time-of-light mass spectrometry to probe Nd:YAG laser ablation products from a new graphite-like material of (BC[sub2]N)[subn] composition. Usefulness of thin films of carbon and related materials containing nitrogen and boron atoms;...

The aim of this work is to demonstrate that single-photon photoionization processes make a significant difference in the expansion and temperature of the plasma produced by laser ablation of ceramic Al2O3 in vacuum as well as to show their consequences in the kinetic energy distribution of the...

The performance of a laser ablation mass analyser designed for in-situ exploration of the chemical composition of planetary surfaces has been investigated. The instrument measures the elemental and isotopic composition of raw solid materials with high spatial resolution. The initial studies were...

The mechanism of laser ablation of 2Cu(CO3)Â·Cu(OH)2 at 308 nm is investigated by time-of-flight mass spectroscopy at laser fluences in the range of 0.07 to 0.6 J cm-2. The neutral and ion composition of the plume reveals the presence of Cu, Cu2O, CuO, H2O and CO2, which appear as free species...